SlotsOfTensor

• SlotsOfTensor[tensor] gives the list of vbundles with up/down marks corresponding to the slots of tensor as it was defined.

• Each tensor has an upvalue for this function.
• The slot structure is stored as {-M1, M1, M2, ...}, such that the first slot is a covariant index on M1, the third slot is a contravariant index on M2, etc.
• Validation routines check that the up/down character of a tensor is right by comparison with SlotsOfTensor. If there is a metric on the corresponding manifold, then no error is given.
• Slots related by the symmetries of tensor must belong to the same vbundle and must have the same character, unless the option ForceSymmetries is used.
• See: Section 4.4.
• See also: DefTensor.
• New in version 0.
• Last update: 25-IX-2007 for version 0.9.3 of xTensor`.

Created by Mathematica  (May 16, 2008)